American River Common Features 2016 Sacramento Weir Widening Yolo County, CA

The purpose of the Sacramento Weir Widening project is to reduce the water surface elevation in the Sacramento River and allow more water to flow into the Yolo Bypass system. The Sacramento Weir Widening project includes construction of the following major features:? 1,437-foot-long passive weir? 2,500 foot-long North Levee Setback? 1,515 foot-long Old River Road Bridge which includes approximately 15,000 length feet of prestressed-precast bridge girders? 1,635-foot-long Realignment of Old River Road and 2,445-foot-long realignment of County Road 126? 2,135-foot-long Railroad Embankment Removal, demolition of 2,880-foot-long existing Sacramento River Right Bank Levee, and demolition of 2,500-foot-long existing levee? Fish Passage Control Structure, including hybrid technical fishway (420 foot-long concrete- lined), fish passage channel structure (200 foot-long concrete-lined), Two 16-foot-wide flow control gates, and associated electrical, instrumentation, and automation; fishway exit (rock-line 230 foot-long); stilling basin drain; modifications to the stilling basin of the existing weir; 1,600 foot-long rock-lined Existing Stilling Basin Drain Channel; and 8,500 foot-long earthen Bypass Transport ChannelThe Sacramento Weir Widening project includes the following quantities, some of which are noted in the major project features above.? Approximately 400,000 CY of levee embankment fill from on-site borrow sources? Approximately 1,000,000 CY of excavation throughout the project? Approximately 38,000 cubic yards of structural concrete? Approximately 1,500 each, 20-inch concrete filled steel pipe piles totaling over 100,000 vertical feet supporting the fish passage concrete features and weir? Erosion Protection in various locations including approximately 35,000 tons of rock slope protection, approximately 130,000 square-feet concrete slope protection, and approximately 90,000 cubic yards of tied concrete block mat